Physics The unit of noise pollution (level) is : Ppm Decibel Decimal None of these Ppm Decibel Decimal None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes 3R/4 5R/4 R/2 2R 3R/4 5R/4 R/2 2R ANSWER DOWNLOAD EXAMIANS APP
Physics What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel? 50 12 36 24 50 12 36 24 ANSWER DOWNLOAD EXAMIANS APP
Physics A black body can absorb radiations of : Lower wavelengths only Higher wavelengths only All wavelengths Intermediate wavelengths only Lower wavelengths only Higher wavelengths only All wavelengths Intermediate wavelengths only ANSWER DOWNLOAD EXAMIANS APP
Physics The value of coefficient of restitution in perfectly elastic collision is 2 1 0.5 2 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Physics A barometer is kept inside a bell jar. Air is slowly pumped out of the jar. The bell jar breaks up The mercury level starts falling The mercury level does not change The mercury level starts rising The bell jar breaks up The mercury level starts falling The mercury level does not change The mercury level starts rising ANSWER DOWNLOAD EXAMIANS APP
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